Home > Publications database > Rechenprogramm zur Parametrisierung von Exponential-Sinus-Schwingungen nach der Methode der kleinsten Fehlerquadrate |
Book/Report | FZJ-2018-00696 |
; ;
1976
Kernforschungsanlage Jülich, Verlag
Jülich
Please use a persistent id in citations: http://hdl.handle.net/2128/16659
Report No.: Juel-1301
Abstract: A fit programme tested in the practice of reactor dynamics, however applicable in general, is described. The parametrization is performed for either damped or undamped sinusoidal oscillations, which are present as a data table in form of distinct data. Thereby it concerns, e. g. time-dependent state variables of reactor physics like neutron flux, Power density, or xenon concentration in the reactor core. The Parameters F$_{o}$ , b, T, t$_{o}$, and $\overline{F}$of the function F(t) = F$_{o}$ $\cdot$ exp ((b(t-t$_{o}$)) $\cdot$ sin ((t-t$_{o}$) $\cdot$ 2$\pi$/T) + $\overline{F}$ are computed iteratively of the data given distinctly by application of the method of the minimum least squares. An analogous algorithm and a subroutine written in PL/1 are introduced. The following properties of the programme are particularly useful for application: - The time-range for parametrization of a curve table is at all selectable. - The programme permeates an independent caIculation of the starting data for the iteration. - An error analysis is performed after the successfully ended iteration.
The record appears in these collections: |